A metallic solid sphere is rotating about its diameter as axis of rotation. If the temperature is increased by 200^(@)C. The percentage increase in its moment of inertia is : (coefficient of linear) expansion of the metal =10^(-5)//^(@)C)

A metallic solid sphere is rotating about its diameter as axis of rota

1.	A metallic solid sphere is rotating about its diameter as axis of rotation. If the temperature is increased by 200^(@)C. The percentage increase in its moment of inertia is : (coefficient of linear) expansion of the metal =10^(-5)//^(@)C)
Answer» 0.1 0.2 0.3 0.4 Solution :`I=(2)/(5)MR^(2)` `(DeltaI)/(I)=2(DeltaR)/(R )=(2R alphat)/(R )=2alpha Deltat` `(DeltaI)/(I)=2xx10^(-5)xx200=4xx10^(-3)` `"Percentage INCREASE "=4xx10^(-3)xx100=0.4`